With the development of the times and the progress of science and technology, agriculture has also improved greatly. Whether it is agricultural machinery or chemical fertilizers and pesticides, all are constantly advancing. Of course, enjoying the benefits of this era, grain harvests have been good.

Master Li happened to enjoy such good times. His family contracted 2 greenhouses to grow tomatoes.

Tomato greenhouse

Master Li heard the expert who came to the village to give a lecture say that diseases should be prevented in advance, which saves money and works well. There are only a few kinds of diseases in the greenhouse. If their prevention and control are done well, then all that is left is to wait for a bumper harvest!

Tomato greenhouse

According to the dosage stated by the agricultural supplies store owner, he sprayed pesticide in advance for prevention, thinking that this would be fine, saving trouble and bringing peace of mind. He often worried about the growth of the tomatoes, fearing they would not grow well, but now he could relax.

Tomato late blight

But troubles came as soon as they were mentioned. To be honest about his own pesticide, both the timing and amount of spraying were correct, so why did the disease still appear? The pesticide for preventing and controlling the disease was completely useless! Master Li thought to himself, why was it useless? He spent money and sprayed for nothing. That expert probably was a fraud. The pesticide definitely had a problem!

He dragged the retailer boss to the field and said angrily, your pesticide is fake! Compensate me.

The boss said, that should not be. Many households buy goods from me here, and none of them have had any problems!

When they got to the field, the boss dipped test paper in the water. It turned blue, and he suddenly understood.

Alkaline water

It turned out the problem was with the water. This water was alkaline, and the pesticide was acidic! When the two neutralized each other, the pesticide effectiveness mostly disappeared. Spraying it on crops to prevent disease like this was no different from spraying plain water, so how could it have any disease-prevention effect?

Alkaline water with pH 8

Here, Teacher Wang Xiuyun teaches everyone a little secret recipe to prevent the loss of pesticide effectiveness: you can first add vinegar to the water and then add the pesticide. In other words, neutralize the water into acidic or neutral, then add the pesticide, and the pesticide effectiveness can be guaranteed!

So what Master Li bought was not a fake pesticide, but a loss of pesticide effectiveness caused by not paying attention. All right, did everyone remember Teacher Wang's little method?

Finally, everyone is welcome to follow!